ST UM3039, Руководство пользователя

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2 Overview
The X-STM32MP-IOT01A operates in the 915 MHz ISM band.
The LSM6DSOX iNEMO inertial module is used for the motion detection.
The X-STM32MP-IOT01A interfaces with the STM32MP157F-DK2 via the 40-pin GPIO connector pins. It uses
SPI, I²C, and GPIO connections for the SPSGRF-915 , LSM6DSOX , keys, and LED.
Figure 2. System block diagram
The X-STM32MP-IOT01A on-board devices are controlled through the STM32MP157F-DK2 using various
peripheral pins available on the GPIO connector.
The
SPSGRF-915 interfaces with the STM32MP157F-DK2 using the SPI.
The I²C interface is used to interact with the LSM6DSOX .
The RGB LED and switches control through GPIOs is used for the user interface. Table 6 shows the configuration
of the GPIO connector pins to connect the various devices.
The
X-STM32MP-IOT01A embeds the following key devices:
• SPSGRF-915 : based on the SPIRIT1 device, which is a low data rate, low-power sub-GHz transceiver.
The SPIRIT1 operates both in the license-free ISM and SRD frequency bands at 169, 433,868 MHz, and
915 MHz. The SPSGRF-915 module is an FCC and IC certified module (FCC ID: S9NSPSGRF and IC:
8976C-SPSGRF). It interfaces with the STM32 Nucleo development boards through an SPI interface and
some GPIOs. The SPSGRF-915 module also integrates the BALF-SPI-01D3 balun and a chip antenna.
Table 1. SPSGRF-915 details
Order code Package Operating voltage
SPSGRF-915 SMD 11 pin 1.8 to 3.6 V
UM3039
Overview
UM3039 - Rev 1
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